none of them
The dens is located on the cerival vertebrae on C2, which is the second vertebrae on the cervial vertebrae.
C1 (Atlas) , and C2 ( Axis ) because they are unlike the rest of the Cervical vertebrae.
The cervical(neck) vertebrae. The joint formed by C1 and C2, also known as the atlas and axis.
There are only 2 cervical vertebrae that have common names: the atlas and the axis, they act as the pivot that allows you to turn your head.
C2 can refer to a few different things, but probably the most common is in reference to the Cervical vertebrae #2.
The first cervical vertebra (C1) and the second cervical vertebra (C2) are atypical vertebrae due to the fact that the structures of these vertebrae are unlike the rest of the cervical spine vertebrae. The C1, also known as the atlas, is a ring-like structure which allows the beginning of the spinal cord to pass through form the base of the skull. The C2, also known as the axis, is the largest of the cervical vertebrae in vertical dimension as it contains an extension of bone called the odontoid process that extends up into the ring of the atlas. This area of the neck is the most freely moveable as the majority of side-to-side rotation occurs at C1 on C2 and is also most important neurologically as this area of the spinal cord controls heart, breathing and posture of the human being.
Cervical vertebrae may also be called neck bones.
They originate from the transverse processes from the cervical vertebrae of C2 to C7 and insert onto the first and second ribs. Thus they are called the lateral vertebral muscles.
C1 is called the atlas and C2 is called the axis
The cervical vertebrae, particularly C1 (atlas) and C2 (axis), are the most mobile and delicate vertebrae in the spine. They allow for a wide range of motion, including rotation, flexion, and extension of the neck. Their unique anatomical structures, including the absence of a vertebral body in C1 and the odontoid process in C2, contribute to their mobility but also make them more susceptible to injury.
The two most superior vertebrae are CERVICAL vertebrae 1 and 2 (C1 and C2). They are also known as the Atlas (C1) and Axis (C2). These two vertebra join together to form the atlantoaxial joint, which helps with the movement of the neck. A structure on the axis called the dens (odontoid process) fits through a foramen (hole) in the atlas to join them together.
In the cervical spine, the C2-C6 vertebrae generally have bifid spinous proceses.